System Sensor B401 400 Series 2-Wire Smoke Detector Base

Notifier System Sensor Conventional B401 SD Detector Base SCHOTTKY DIODE (53)

1PCS System Sensor B401 400 Series 2 Wire Smoke Detector Base

System Sensor B501 Plug-in Detector Base

System Sensor 2W-B 2-Wire Smoke Detector

System Sensor B401B Plug-In Fire Alarm Smoke Detector Base, E-21

Used Silent Knight SD505-6AB Smoke Detector Base Only.

System Sensor P121575 SpectrAlert Classic Fire Alarm Horn Strobe 12VDC NO SCREW